Im running some campaigns and can't figure out why some of my adwords are the yello background text adds and some are over on the right hand side? Any advice?
Google are a bit vague on this, but it sounds as though your advert must be in the top three positions, and have a high enough Quality Score. http://adwords.google.com/support/bin/answer.py?answer=6546&query=above&topic=&type=f&onClick= If it's determined on Quality Score, I don't know what happens if the second advert has a high enough Quality Score, and the first advert doesn't. I suspect that your bid is taken into account as well.